One of our most high-profile charities, the RSPB, says it depends not just on the volunteer help they receive - but the expertise it brings with it.
Two decades ago, this was the building site for the Conwy tunnel before it was transformed into a wildlife sanctuary - and now volunteers' experiences are being turned into some much-needed help for our birds, too.
The report - the first of its kind in Wales - will be officially launched in Cardiff tonight.
Wales is blessed with some fantastic and unique wildlife, but it is declining, the pressures it faces are growing, and our responses are not ambitious enough. The next decade is a tipping point and we must act in order to make a difference; otherwise we will see the extinction of species at a local level not seen before in Wales.
– Dr Trevor Dines, Plantlife Cymru
We are challenging Welsh Government and Natural Resources Wales to put more of an emphasis on biodiversity, and to put energy and resources into helping wildlife, so that we can better understand the state of nature in Wales.
The State of Nature report found that recent environmental changes are having a 'dramatic impact' on the nature of the UK's land and seas. It also found evidence that species with specific habitat requirements are faring worse than those that can better adapt to a changing environment.
Other findings include:
Over one in seven plants in Wales are considered threatened
63% of Welsh butterflies are declining
More than a third of all woodland species assessed are in decline.
The number of breeding upland wading birds, such as curlew, lapwing and golden plover, have declined by more than 75% in recent decades
But the report also found that some species are on the increase, including hen harriers, black grouse and bats.